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What is the stimulus-response model of the nervous system?

Answer 1

This is a model which allows living organisms to respond to changes in their environment and act accordingly.

The senses (hearing, sight, taste etc.) allow organisms to gather information about what is happening in their environment. One a sense is stimulated, a message is sent through the central nervous system to a part of the body which will do something.

Here is an example. In the video, the runner receives a stimulus of a starter pistol going off. The sound of the gun is sensed by the ears and a message is sent by the central nervous system to the legs and arms. Muscles contract which allow the runner to explode out of the blocks.

The sound of the gun is the stimulus, the athlete starting to run is the response.

Video from: Noel Pauller

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Answer 2

Vivian Aronson

The three main stages of the stimulus-response model of the nervous system are as follows: the stimulus is received by sensory receptors, it is transmitted along neural pathways to the central nervous system, and the effector organs generate a response. This model explains how sensory stimuli cause an organism to respond.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.